#!/usr/bin/env bash
set -euo pipefail

SLEEPTIME=60

cd "$(dirname "$0")"

stat --version 2>/dev/null | grep -q 'GNU coreutils' || {
	echo >&2 "Not gnu stat!"; exit 1;
}

logf_dbsize="log_dbsize.txt"
[[ -f $logf_dbsize ]] && echo "Appending to '$logf_dbsize'" || echo "Logging to '$logf_dbsize'"

echo "Monitoring: logging every $SLEEPTIME seconds"

while true; do
	now="$EPOCHSECONDS"
	dbsize="$(stat -c '%s' ../db.db)"
	echo "$now $dbsize" >>"$logf_dbsize"

	sleep "$SLEEPTIME"
done